Obstruction Peak is a 6,450-foot-elevation (1,966-meter) summit in the Olympic Mountains and is located in Clallam County of Washington state.

The road ends below the south slope of Obstruction Peak, and a short hike leads to the summit.

Set in the north-central portion of the Olympic Mountains, Obstruction Peak is located in the marine west coast climate zone of western North America.

As fronts approach, they are forced upward by the peaks (orographic lift), causing them to drop their moisture in the form of rain or snow.

It's believed that a road-building project in the 1940s was expected to run a full-circle loop from the Elwha River to Hurricane Ridge and Deer Park, then on to Port Angeles.